A person is designing a telescope with a magnification of 10.If the telescope is limited to a length of 0.20 m,what is the approximate focal length of the objective?
A)16 cm
B)17 cm
C)18 cm
D)19 cm

Question

Quizplus · Accepted Answer

The magnification of a telescope is given by the ratio of the focal lengths of the objective and the eyepiece. For a magnification of 10 and a total length of 0.20 m (20 cm), the focal length of the objective is approximately 18 cm, as the eyepiece would then be around 2 cm.

A Person Is Designing a Telescope with a Magnification of 10.If